Objective:
To investigate the impact of prenatal testosterone exposure on physical activity and muscle strength in children by age 7, particularly in the context of maternal polycystic ovary syndrome (PCOS).
Approach:
- Study Population: Data was analyzed from 695 pregnant women with and without PCOS in the Odense Child Cohort.
- Measurement Methods: Testosterone levels were measured during the third trimester, and children's physical activity and muscle strength were assessed at age 7 using accelerometers.
Key Findings:
- Boys born to mothers with PCOS showed reduced physical activity on weekends, with 265 fewer counts per minute (P = .02).
- Maternal PCOS was associated with less moderate and vigorous physical activity in boys on weekends.
- Girls exposed to higher maternal testosterone levels had lower isometric muscle strength, with a decrease of 8.5 N/kg bodyweight for each nmol/L increase in maternal free testosterone (P = .003).
Interpretation:
The study reports sex-specific developmental effects of maternal testosterone on children's physical activity and muscle strength.
Limitations:
- The study does not address the long-term effects of prenatal testosterone exposure beyond childhood.
- There is limited data on boys regarding PCOS-related metabolic and cardiovascular disease risk.
Conclusion:
The team will next assess whether these children, exposed to PCOS and higher testosterone levels in the womb, continue to have reduced physical activity into adolescence.
Sources:
This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.
